CN103376467B - Method and system for managing a multi-vessel seismic system - Google Patents
Method and system for managing a multi-vessel seismic system Download PDFInfo
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- CN103376467B CN103376467B CN201310153628.0A CN201310153628A CN103376467B CN 103376467 B CN103376467 B CN 103376467B CN 201310153628 A CN201310153628 A CN 201310153628A CN 103376467 B CN103376467 B CN 103376467B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/38—Seismology; Seismic or acoustic prospecting or detecting specially adapted for water-covered areas
- G01V1/3808—Seismic data acquisition, e.g. survey design
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/22—Transmitting seismic signals to recording or processing apparatus
- G01V1/223—Radioseismic systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/24—Recording seismic data
- G01V1/26—Reference-signal-transmitting devices, e.g. indicating moment of firing of shot
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2200/00—Details of seismic or acoustic prospecting or detecting in general
- G01V2200/10—Miscellaneous details
- G01V2200/14—Quality control
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Abstract
A method for managing a multi-vessel seismic system comprising a first vessel, having a recording system and towing at least one streamer integrating seismic sensors, and a second vessel, comprising at least one seismic source performing shots. The second vessel sends to the first vessel, via a radio link, a plurality of series of shot predictions. For each shot, the second vessels activates the seismic source according to the predictions and sends to the first vessel, via the radio link, shot data relating to the shot. The first vessel activates the recording system, in order to record seismic data, either non-continuously and according to a last received series of shot predictions, or continuously. If, by analyzing a received series of shot predictions, the first vessel detects that it has not received the shot data relating to at least one performed shot, then the first vessel sends a request to the second vessel and receives in response the missing shot data. For each performed shot and the related shot data, the system selects seismic data as a function of the related shot data, and combines the selected seismic data with the related shot data in order to obtain combined data whose interpretation allows to obtain a seabed representation.
Description
Technical field
The present invention relates to geophysical data collection.
More precisely, the present invention relates to marine seismic acquisition, this marine seismic acquisition needs some ships, with to sea
The bottom earth's crust is imaged.
Specifically, the present invention relates to a kind of method for managing many ship seismic systems, many ship seismic system bags
Include：First ship (also referred to as " monitors ship (listener vessel) "), and which has record system and draws at least one towing cable
Integrated form seismic sensor；And second ship (also referred to as " fire ship (shooter vessel) "), its be included in determination when
Carve at least one focus for performing explosion.The method comprising the steps of：Seismic sensor is recorded by record system to be obtained
The geological data for obtaining；And enter by the geological data for being recorded (the first file) and about the explosion data (the second file) of explosion
Row combination, to obtain data splitting (the 3rd file), by being interpreted to the data splitting, is obtained in that seabed represents
(seabed representation)。
In fact, many ship seismic systems generally include the ship of more than two, for example, if wherein have some fire ships and
A dry monitoring ship.Additionally, some ships not only can as fire ship but also can as monitor ship.However, hereinafter only considering a pair
The simple scenario of ship, the pair of ship include a fire ship and a monitoring ship.In fact, any complicated many boat systems all may be used
To resolve into the simple scenario of multiple aforementioned types, this is because：
Despite the presence of some fire ships, but these fire ships can be in same time explosion；
Despite the presence of some monitoring ships, but the working method of per monitoring ship is all identical with fire ship；
Although a ship not only as fire ship but also be able to can may only have as monitoring ship, this ship every time
A kind of working condition.
The present invention is particularly applicable to Petroleum Exploration Industry, but it is also possible to be applied to geophysics used in environment at sea
Any field of data acquisition network.
Background technology
In order to marine seismic acquisition is performed in survey area, focus (rifle, vibration source etc.) and seismic sensors are usually used
Device.Sensor is disposed in the cable, referred to as towing cable or linear antenna.Some towing cables are used together, and just form thousands of biographies
The array of sensor.Focus and towing cable are drawn by ship.Ship typically draws one or more towing cable, and can be equipped with (or not
It is equipped with) focus.
In order to geophysical data is collected at sea environment, start by the one or several of at least one fire ship traction
Individual immersion focus, with the energy for producing pulse or continuously sweep.Each layer of the signal produced by each focus through the earth's crust,
And sensor (hydrophone) capture in the towing cable drawn by least one monitoring ship by reflected signal.
Subsequently, the data that all the sensors are collected within the time period (referred to as record length) of several seconds by record system
Store into data set (the typically file of SEG-D forms).Geological data to including in SEG-D files is interpreted, so as to
Calculate the 3D rendering of the earth's crust.
The theoretical position of focus and seismic sensor when gathering every time is in the specific text for being referred to as " reservation chart (preplot) "
It is described in shelves：In accordance with the requirement of reservation chart, the image quality of the earth's crust is higher.Thanks to well known measurement handss
Section (GPS, RGPS, sound device, compass, depth transducer etc.), is able to know the actual bit of all devices (hydrophone and rifle)
Put.
Gatherer process is that controlling and monitor, the integrated navigation system act as by integrated navigation system (INS)：
According to the geometry in reservation chart, the position of sensor and focus is calculated, order about ship and navigate by water along their collection path；With
And start focus to perform earthquake-capturing in desired location.
By swapace event (referred to as target center) and time-event (referred to as explosion (shots)), it is possible to achieve (focus with
Between sensor) this time and spatial synchronization, wherein spatial event gives the position that every ship should locate and (is thus given
The position of sensor and focus), and time-event gives the time for starting focus.
In order to further improve the quality of seismic imaging, seismic survey is performed in the way of the operation of many ships at present, with over the ground
Shell carries out wide-azimuth illumination.In the case, initial pulse is transferred to via radio modem line and participates in the one of exploration
Or many ships.In many ship operating process, a kind of known solution is that explosion management is focused on a specific ship
On, the ship is referred to as main ship (master vessel).For example, this main ship draws many earthquake towed cables and also draws one or many
Individual focus (for example, rifle).
The positional information of all ships is all sent to this main ship, main ship then according to reservation chart come generate all ships space and
Time-event.Flow of information obtains real-time exchange by wireless channel, however, due to exist decay, the distance between each ship it is longer,
Path is more and there is floating barrier, therefore this exchange is not absolutely reliable.
With reference toFig. 1, this schematically shows an example of this many ship marine seismic acquisitions.
As described above, for simplicity, it is considered to the simple scenario of a pair of ships, the pair of ship includes traction focus G2
The monitoring ship V1 of many towing cable S1 of fire ship V2 and traction of (for example, rifle).Moreover, it is assumed that it is main ship to monitor ship V1, and it is quick-fried
Broken ship V2 is subordinate ship.The moving parallel of main ship V1 is in subordinate ship V2.(for example, towing cable S1 includes earthquake signal receiving sensor
Hydrophone), for receiving signaling reflex from focus G2.
Focus G2 is controlled by the energy source controller on subordinate ship V2.Towing cable S1 received signals are by earthquake record
Device is recorded on main ship V1.
The signaling reflex of the sent signals of focus G2 needs to be recorded at towing cable S1.For this purpose, for accurate data
For collection so that monitor the record system and fire ship (being subordinate ship in this example) on ship (ship based in this example)
On focus be synchronously particularly important.Although however, the record system on any given ship can be with the focus on same ship
Accurate synchronization, but the record system for making way for monitoring on ship is proved to be and is difficult to the focus precise coordination being located on fire ship
Realize.
When the record system on main ship is set to record the seismic reflection of the focus on subordinate ship, will occur
One example of the problem.Focus transmission explosion order of the main ship to subordinate ship.Main ship computer sends quick-fried to subordinate ship focus
There is less but obvious time delay between the moment of broken order and the subordinate ship actual moment for causing explosion.Cause the original of this time delay
Because there is intrinsic time delay in the receives link between computer, wireless radio transmission and each ship.
The detonation moment of any focus, and the moment all referred to as " event that any specific reflection is received by towing cable
(events) ", these events are required synchronous.Those skilled in the art will also be appreciated that synchronously existing between other events
It is same most important during many ship seismic prospectings.The example of such other events is included：Specific ship bottom specified point Over the sea
Moment, the Startup time of focus on specific ship, etc..
According to canonical system, VHF radio links for the transmission events between two ships (main ship and subordinate ship), its
In, for example, phaselocked loop (PLL) circuit is used for the event that detection is transmitted on a radio link.Based on the time delay for calculating, in spy
Timing is carved, and radio link two ends can produce " ignition " and " time break (time break) " order, thus be hopeful to make
Recorder is in the moment start recording about the same with the ignition moment of focus.However, this system needs the wireless of stable operation
Fax transmission link, and the system also needs to periodic calibration.Calibration typically " offline " is performed, therefore between repeatedly calibrating
Timing error may be produced, these timing errors are not detected.
In seismic survey process, for example, when two ships navigate by water the both sides of the metallic barrier in offshore platform etc.
When, the radio link between two ships (or more ships) may be lost or break down (disconnect).
If losing when radio link is transferred to the focus of subordinate ship in explosion order or breaking down, explosion order will
Will not be received, explosion would not occur, and the ship will miss a place for needing data.
Therefore, such loss of radio communication (radio link) can hinder main ship accurately to understand the position of other ships, and
And/or person can hinder other ships to receive time and spatial event so that explosion it is not accurate enough in the time and/or spatially or
Explosion is caused not occur.The image of the earth's crust is changed thus.
The content of the invention
In at least one embodiment, the present invention is particularly intended to overcome these defects of prior art.
More specifically, of at least one embodiment of the invention aims at, there is provided a kind of to be used to manage many ships
The technology (comprising explosion and record operation) of seismic system, even if temporarily lost the radio link between ship, many ships
Seismic system can continue to be operated with required time and spatial precision.
Another of at least one embodiment of the present invention is aimed at, there is provided easy to implement and lower-cost such skill
Art.
Another of at least one embodiment of the present invention is aimed at, there is provided can use discontinuous record system or company
Continuous record system is come such technology for implementing.
One particular embodiment of the present invention proposes a kind of method for managing many ship seismic systems, many ship ground
Shake system includes：First ship, first ship have record system and draw at least one towing cable integrated form seismic sensor；
And second ship, the second ship include perform explosion at least one focus, the earthquake number obtained by the seismic sensor
According to being recorded by the record system, the geological data for being recorded is combined with the explosion data about the explosion, with
Data splitting is obtained, by being interpreted to the data splitting, is obtained in that seabed represents, methods described is characterised by,
Methods described includes：
Multiple explosions are predicted that (shot prediction) series is sent to institute via radio link by the-second ship
The first ship is stated, the series is continuous in time to be updated, and each series includes the moment for being designed for ensuing n times explosion, its
Middle N >=2；
- for every separate explosion, the second ship starts at least one focus according to the prediction, and via institute
Radio link is stated by the explosion data is activation about the explosion to first ship；
- in order to record geological data, first ship is in a non-continuous manner and according to the explosion prediction for finally receiving
Series is starting the record system, or starts the record system in a continuous manner；
If-predict that series is analyzed by the explosion to receiving, first ship detects that oneself not yet receives
To the explosion data about executed explosion at least one times, then first ship sends the requests to the second ship, and
Receive the omission explosion data as response；
- each executed explosion and related explosion data are directed to, earthquake number is selected according to the related explosion data
According to, and selected geological data is combined to the related explosion data, to obtain the data splitting.
Therefore, this specific embodiment depends on a kind of brand-new inventive method, in the process, even if the first ship and
Radio link between two ships cannot be used (temporarily lose radio link), each of the first ship and second ship
The operation (the record operation of the blast operations of second ship and the first ship) of oneself can be continued.
Explosion prediction series (from second ship) is have received luckily, the first ship can be detected wirelessly according to posteriority mode
The interruption on current source road, and the explosion data of omission are obtained (that is, with radio link from second ship using request/response mechanism
The explosion data of the one or many explosion correlation that Interruption period between The following article occurs).
As described in detail, in radio link Interruption period between The following article, the first ship continues record geological data and (there may be two
The situation of kind：Using discontinuous record system or using continuous record system).
According to special characteristic, the explosion data of the executed explosion about giving include：
The actual time of-given executed the explosion；
The position of at least one focus of the executed explosion given described in-executed；And
- related at least one rifle included at least one focus and described given hold for performing
The data of row explosion.
According to special characteristic, for each executed explosion, the first ship is obtained from the explosion prediction series for finally receiving
The moment of the executed explosion must be designed for, and in the moment function (instant function) at the plan moment
At least one included equipment in place's startup first ship.
Therefore, even if the radio link between the first ship and second ship cannot be used (is temporarily lost radio link
Road), the first ship also can continue to perform the operation in addition to record operation.For example, at least one equipment is acoustic control
Device (as described in detail).
According to special characteristic, in series, the number N of included explosion prediction is variable, and is the speed of second ship
Function.
Thus, for example, can allow what radio link interrupted to allow that the persistent period keeps constant (in this example, when the
When the speed of two ships increases, the number predicted in each series should increase).
According to special characteristic, the first ship performs according to the related explosion data to select the step of geological data,
And combine to obtain the step of the data splitting by the selected geological data to the related explosion data.
Therefore, the data splitting is obtained by the first ship, for example, is obtained in seismic survey process.In a variant,
Select step and combination step (or only combination step) perform in the outside of the first ship, for example, seismic survey it
After perform.
In the first embodiment, the record system is discontinuous record system.For each executed explosion, first
Ship obtains the moment for being designed for the executed explosion from the explosion prediction series for finally receiving, and in the plan
Moment starts the discontinuous record system.For each executed explosion, the step of geological data is selected to include：According to
The actual time of the included executed explosion in the explosion data, selects by the discontinuous record system from described
The geological data of plan moment start recording.
Last explosion prediction series (before radio link interrupts) is received luckily, the first ship still will be seen that
Start the time of discontinuous record system.
According to the special characteristic of this first embodiment, for each executed explosion, the step of geological data is selected
Suddenly comprise the following steps：
- determine time shift between following item：The second ship performs the actual time of the executed explosion, and described
The moment for being designed for the executed explosion that first ship is obtained from the explosion prediction series for finally receiving；
- according to the actual time and the time shift of the executed explosion, by the discontinuous record system
Geological data is selected from the geological data of the plan moment start recording.
Therefore, it can the time shift between following item to be possibly be present to radio link Interruption period between The following article compensate：
Second ship is predicted to determine the blasting time renewal of (starting the moment of focus).The renewal of the prediction is former
Because for example, the speed of second ship is inconstant；And
First peculiar to vessel does not update prediction (that is, radio link with determine the record time moment of record system (start)
The last prediction series that road is received before interrupting).
According to the special characteristic of this first embodiment, if second ship detect the radio link be can not so that
, then second ship can stop the explosion prediction series for generating new renewal, and according to the explosion prediction series for ultimately producing
Ensuing explosion is performed, till radio link can be reused.
Aforementioned time shift can so be reduced.
In this second embodiment, the record system is come the ground for making time stamp data Yu recorded using common clock
The associated continuous record system of shake data.Second ship is determined included in the explosion data using the common clock
The actual time of each executed explosion.For each executed explosion, the step of geological data is selected to include：According to institute
The actual time and the time stamp data being associated with the recorded geological data of executed explosion are stated,
Geological data is selected in the geological data for being recorded.
In the second embodiment of here, for each executed explosion, it is last that the first ship is not received using oneself
The correct geological data that explosion is predicted series (before radio link interrupts) to select to combine with explosion data.
In another embodiment, the present invention relates to a kind of computer program, the computer program includes
Code instructions, for implementing said method when described program is performed in computer or processor (in different embodiments
In any embodiment in).
In another embodiment, the present invention relates to a kind of non-momentary computer readable carrier medium of storage program, when
When described program is by computer or computing device, described program causes the computer or the computing device said method
(in any embodiment in different embodiments).
In another embodiment, the present invention relates to a kind of many ship seismic systems, many ship seismic systems include：First
Ship, first ship have record system and draw at least one towing cable integrated form seismic sensor；And second ship, it is described
Second ship includes at least one focus for performing explosion, and the geological data obtained by the seismic sensor is by the record system
Recorded, the geological data for being recorded is combined with the explosion data about the explosion, to obtain data splitting, is passed through
The data splitting is interpreted, is obtained in that seabed represents：
- the second ship is suitable for being sent to institute by multiple explosions prediction series (TP, TP', TP ") via radio link
The first ship is stated, the series is continuous in time to be updated, and each series includes the moment for being designed for ensuing n times explosion, its
Middle N >=2；
- the second ship is suitable for every separate explosion according to the prediction to start at least one focus, and
The explosion data (FTB, SP, GH) about the explosion are sent to into first ship via the radio link；
- first ship is applied in a non-continuous manner and predicts series to start according to the explosion for finally receiving
Record system is stated, or starts the record system in a continuous manner, so as to record geological data；
Suitable for predicting that series is analyzed by the explosion to receiving ,-first ship detects that oneself not yet connects
Receive the explosion data about executed explosion at least one times；
If-first ship detects the explosion number oneself not yet received about executed explosion at least one times
According to, then first ship is suitable for sending the requests to the second ship, and receives the omission explosion data as response；
- the system is suitable for each executed explosion and related explosion data, according to the related explosion number
According to selecting geological data, and by selected geological data and the related explosion data combination, to obtain the combination
Data.
Description of the drawings
- Fig. 1 is described with reference to prior art, show the letter including fire ship and many ship seismic systems for monitoring ship
Change example；
- Fig. 2 is the schematic diagram of fire ship and the functional device included in monitoring ship, and the fire ship and monitoring ship belong to root
According to many ship seismic systems of a specific embodiment of the invention；
- Fig. 3 and Fig. 4 are schematically showing for the seismic survey using method according to a first embodiment of the present invention, point
Do not show a case that radio link normal work (Fig. 3) and break down (Fig. 4)；
- Fig. 5 and Fig. 6 are schematically showing for the seismic survey using method according to a second embodiment of the present invention, point
Do not show a case that radio link normal work (Fig. 5) and break down (Fig. 6).
Specific embodiment
Fig. 2In shown specific embodiment, many ship seismic systems include fire ship V2 and monitor ship V1.
As described above, for convenience of description, can only consider this pair of ships (comprising a fire ship and a monitoring
Ship) simple scenario because any complicated many boat systems can be decomposed into multiple such simple scenarios.
Fire ship V2 includes：
- integrated navigation system INS2, when which is used to determine ignition for each blow-up point in predetermined " reservation chart "
Between；
- radio communications system R2, its be designed to by radio link come at least with monitor ship V1 exchange datas；
- clock reference CR2, which is synchronous with the gps clock of second ship (not shown)；
- focus G2, which includes (such as) one or more rifle；
- gun controller GC2, which can send order to focus G2 and generate explosion data.By means of integrated navigation system
The binary electrical signal that INS2 sends, gun controller GC2 sends order, to cause explosion.All it is occur in signal per separate explosion
Cause after change.When explosion is caused, the binary output signal of gun controller GC2 is used to determine true blasting time
(also referred to as FTB, i.e. " live time break (Field Time Break) ").After every separate explosion, gun controller GC2 is generated
Information (pressure, the rifle being activated, depth) about rifle, these information aggregations are at " pipette tips (gun header) " (also referred to as GH)
In.Gun controller GC2 provides the explosion data about each explosion to integrated navigation system INS2, i.e. true blasting time FTB
And pipette tips GH.
Monitoring ship V1 includes：
- integrated navigation system INS1；
- radio communications system R1, its be designed to by radio link come at least with fire ship V2 exchange datas；
- clock reference CR1, which is synchronous with the gps clock (not shown) of the first ship；
Multiple seismic sensor SS1 (for example, hydrophone) on-towing cable S1；
- alignment system PS1 (GPS, DGPS, RGPS), which enables integrated navigation system INS1 to calculate on towing cable S1
All seismic sensor SS1 position；
- acoustic controller AC1, which controls acoustic modem and integrated navigation system INS1 is calculated
The position of all seismic sensor SS1；
- seismic recorder SR1, which is designed to record the file comprising the geological data from seismic sensor SS1 (under
In the description of text, the file is also referred to as " the first file ").Seismic recorder SR1 is sent by integrated navigation system INS1
Binary signal is starting.Seismic recorder SR1 supplement obtain that fire ship is transmitted and integrated navigation system INS1 collected by
Excessive data (pipette tips GH, true blasting time FTB, the position SP of focus).
When seismic survey is carried out, can determine event and operation exact time and can be between different operations
It is particularly important to set up definite time relationship.Specifically, it is essential that so that be sent to monitor ship V1 earthquake
The binary signal Complete Synchronization of the binary signal of recorder SR1 and the gun controller GC2 for being sent to fire ship V2.
After every separate explosion, monitor：
First file, the geological data provided by the seismic sensor SS1 which includes earthquake towed cable S1；And
Second file, referred to as RH files (that is, " record head (record header) "), its include with fire ship V2
The related information (hypocentral location SP when pipette tips GH, true blasting time FTB and explosion) of explosion.
These first and second files are subsequently combined, to form complete the 3rd file (also referred to as SEG-D files).
During one earthquake exploration, the integrated navigation system INS1 for monitoring ship V1 records relevant seismic sensor network
All information：Positional information (being obtained by GPS, DGPS or RGPS), pressure information (being obtained by pressure transducer), depth
Information (by depth transducer obtain), about acoustic mode and the information about blasting time etc..These information records exist
In LOG files (such as, it then follows Ukooa P294 specifications), the LOG files are used for the sensor position for determining the particular shot time
Put.
Subsequently, represent to obtain complete seabed, SEG-D files is associated with LOG files.
With reference now to Fig. 3 and Fig. 4, Fig. 3 and Fig. 4, show method according to a first embodiment of the present invention.In figure 3, supervise
Listen the radio link normal work (i.e., it is possible to use) between ship V1 and fire ship V2.In the diagram, this radio link goes out
Existing failure (i.e. it is impossible to use).It should be noted that Fig. 3 and Fig. 4 schematically illustrate the sequence of operations on time shafts.
Fig. 3Schematically illustrate in normal condition (radio link normal work between monitoring ship V1 and fire ship V2
Make) under and discontinuous logging mode (assume seismic recorder SR1 be discontinuous record system, it is necessary to open in every separate explosion
Move to proceed by record) under, the management performed by blast operations and record operation.
The step of being performed by monitoring ship V1 and fire ship V2 is will be described in now.
Fire ship V2 knows self-position, itself speed and reservation chart, and it periodically (for example, every one second) can calculate
A series of explosions prediction (TP, TP', TP "), the explosion prediction is including the moment for being designed for ensuing n times explosion.Example
Such as, N=30, and continuous explosion prediction series TP, TP', TP " can be labeled as：
·TP(T0(shot1),T0(shot2),T0(shot3)…T0(shotN))
·TP'(T0'(shot1),T0'(shot2),T0'(shot3)…T0'(shotN))
·TP”(T0”(shot1),T0”(shot2),T0”(shot3)…T0”(shotN))
Every one second, the new prediction series with timestamp (time of calculating) can be sent to monitoring ship by fire ship V2
V1。
In examples as shown in figure 3, it is assumed that the first last blasting time is T0 " (shot1), i.e. be labeled as TP " be
The row given time.Therefore, in T0 " (shot1) place, enabling signal 31 sends by the integrated navigation system INS2 of fire ship V2
Gun controller GC2 is given, so that the gun controller performs ignition (that is, carrying out the first explosion).After the first explosion, rifle control
Device GC2 provides message 32 to integrated navigation system INS2, and message 32 includes blasting time FTB and pipette tips GH.Subsequently, integrated navigation
Message 33 is sent to system INS2 the integrated navigation system INS1 for monitoring ship V1 via radio link, and message 33 is comprising relevant
The data of the first explosion, i.e. blasting time FTB, pipette tips GH and hypocentral location (SP).
Have been received by before finally predicting series TP " monitoring ship V1 can make decision, with T0 " (shot1) place will
Enabling signal 34 is sent to seismic recorder SR1, so as to the seismic recorder start recording.Seismic recorder SR1 generates the
One file 30, the first file 30 include the geological data from seismic sensor SS1, and the data and T0 " (shot1)
Time stamp data (time tag) functional dependence joins.
In T0 " (shot1) plus predefined time delay D (possibly positive or negative) place, integrated navigation system INS1 will be opened
Dynamic signal 35 is sent to acoustic controller AC1 (to update the position of seismic sensor), and/or is sent to and carries out quality control
Any equipment (for example, gravimeter, magnetometer etc.) needed for system etc..
Additionally, the integrated navigation system INS1 for monitoring ship V1 calculates record head RH files (the second file) the RH is literary
Part is sent to seismic recorder SR1, and the RH files include the data (blasting time of relevant first explosion for receiving before
FTB, pipette tips GH and hypocentral location SP).This record head RH is sent to seismic recorder SR1 in message 36.
Finally, by the first file 30 is combined with the second file (RH files), seismic recorder SR1 generates (arrow 37
Represented operation) about the very complete SEG-D files (the 3rd file) of the first explosion.
In a variant, the first file is combined with the second file not by seismic recorder SR1 performing, but by
Another equipment for monitoring ship V1 (for example, is performed in seismic survey process) performing, or is monitored on ship V1 by not being located at
Equipment (for example, is performed after exploration) performing.
As shown in Figure 3, after time (T0 " (the shot1)) past of the first explosion, new circulation can subsequently be started
(to prepare the second explosion).The starting of this new circulation sends new one group corresponding to fire ship V2 and continuously predicts series, described pre-
Surveying series of markings is：
·TPn(T0n(shot2),T0n(shot3),T0n(shot4)…T0n(shotN))
·TPn+1(T0n+1(shot2),T0n+1(shot3),T0n+1(shot4)…T0n+1(shotN))
·TPn+2(T0n+2(shot2),T0n+2(shot3),T0n+2(shot4)…T0n+2(shotN))
In examples as shown in figure 3, it is assumed that the second last blasting time is T0n+2(shot2), i.e. be labeled as TPn+2
Series given by time.Other steps of this new circulation will not be described again.
Fig. 4Schematically illustrate non-normal condition (radio link not monitor ship V1 and fire ship V2 between just
Often work) under and aforementioned discontinuous logging mode under, the management performed by blast operations and record operation.
In the example shown in fig. 4, the time period that radio link breaks down is represented by shadow region 410.Change sentence
Talk about, it is assumed that monitor ship V1 and do not receive explosion prediction series TP " to TPn-1.Received before radio link breaks down
Last series be TP', and first series received after radio link again normal work is TPn。
The step of being performed by monitoring ship V1 and fire ship V2 is will be described in now.
Series as shown in Figure 3, it is assumed that the first last blasting time is T0 " (shot1), i.e. be labeled as TP " to
The time for going out.Therefore, in T0 " (shot1) place, enabling signal 31 is sent to rifle control by the integrated navigation system INS2 of fire ship V2
Device GC2 processed, so that the gun controller performs ignition (that is, carrying out the first explosion).After the first explosion, gun controller GC2
Message 32 is provided to integrated navigation system INS2, message 32 includes blasting time FTB and pipette tips GH.Subsequently, integrated navigation system
Message 33 is sent to INS2 the integrated navigation system INS1 for monitoring ship V1 via radio link, and message 33 includes relevant first
The data of explosion, i.e. blasting time FTB, pipette tips GH and hypocentral location (SP).
Only know the prediction for finally receiving series TP'(rather than TP ") monitoring ship V1 make decision, with T0'
(shot1) enabling signal 44 is sent to seismic recorder SR1 by (rather than T0 " (shot1)) place, so as to the seismic recorder
Start recording.Seismic recorder SR1 generates the first file 40, and the first file 40 is comprising the earthquake number from seismic sensor SS1
According to, and the data and T0'(shot1) (rather than T0 " (shot1)) time stamp data (time tag) functional dependence
Connection.
In T0'(shot1) plus predefined time delay D (possibly positive or negative) place, integrated navigation system INS1 will be opened
Dynamic signal 45 is sent to acoustic controller AC1 (to update the position of seismic sensor), and/or is sent to and carries out quality control
Any equipment (for example, gravimeter, magnetometer etc.) needed for system etc..
In this stage, the integrated navigation system INS1 for monitoring ship V1 cannot calculate RH files (the second file), because it
Message 33 is not received by, and message 33 includes data (blasting time FTB, pipette tips GH and the focus position about the first explosion
Put SP).
When the integrated navigation system INS1 for monitoring ship V1 receive new prediction series (in the example shown in fig. 4 for
TPn) when, it detects the explosion data not yet received about the first explosion itself.Subsequently, integrated navigation system INS1 please
Ask RD1 to be sent to the integrated navigation system INS2 of (arrow 47) fire ship V2, and receive the message RD2 (arrow as response
48), message RD2 includes omission explosion data (blasting time FTB, pipette tips GH and the hypocentral location about the first explosion
SP)。
If some separate explosions (rather than institute in the example such as Fig. 4 is had been carried out during radio link breaks down
The only once explosion shown), then the integrated navigation system INS2 of fire ship V2 can send message RD2, and message RD2 includes
Close the omission explosion data (blasting time FTB, pipette tips GH and hypocentral location SP) of all these explosions.
In the example shown in fig. 4, after message RD2 (arrow 48) is received, monitor the integrated navigation system of ship V1
INS1 calculates RH files (the second file) and the RH files is sent to seismic recorder SR1, before the RH files include
The data (blasting time FTB, pipette tips GH and hypocentral location SP) of relevant first explosion for receiving.This record head RH is in message
Seismic recorder SR1 is sent in 46.
Finally, by the first file 40 is combined to the second file (RH files) (both of which is related with the first explosion),
(the 3rd is literary for the very complete SEG-D files of relevant first explosions of seismic recorder SR1 generations (operation represented by arrow 49)
Part).In order to perform this combination, seismic recorder SR1 can select the first file 40 about the first explosion (from T0'(shot1)
Start recording), selection gist is actual time (the RH files that seismic recorder SR1 is received in message 46 of the first explosion
In included information FTB).
However, due to having completed the first explosion (or any other explosion) during radio link breaks down, therefore
There is time shift Δ t between following item：
Actual time (as detailed above, the integrated navigation system INS2 of the first explosion performed by fire ship V2
In T0 " (shot1) place enabling signal 31 is sent to into gun controller GC2)；And
Plan in monitoring the prediction series TP' of last explosion received by the integrated navigation system INS1 of ship V1 with
In the moment T0'(shot1 of the first explosion).
The time shift can be about：Δ t=T0'(shot1)-T0 " (shot1)
Due to there is the time shift, therefore, it is imperfect simultaneously about the first file (seismic data recording) possibility of the first explosion
And it is incorrect.Therefore, must account for when making the first file synchronous to the second file (both of which is related with the first explosion)
Time shift Δ t.For this purpose, know the value of Δ t, the part with the definite time correlation connection of the first explosion in the first file just can be obtained
Geological data is selected in the geological data of (from T0'(shot1) start recording).This part of first file and the second file
(RH files) is combined, to set up complete the 3rd file (SEG-D files).
In a variant, by the first file (or the part for the first file selected according to time shift Δ t) and second
File combination is not by seismic recorder SR1 performing, but is performed (for example, in earthquake by another equipment for monitoring ship V1
Perform during exploration), or (for example, performed after exploration) performing by the equipment monitored on ship V1 is not located at.
According to another variant, if fire ship detects that radio link cannot be used, then fire ship meeting
Stop generating the new explosion prediction series for updating, and (detect that radio link goes out according to the explosion prediction series for ultimately producing
Last series before existing failure) ensuing explosion is performed, till radio link can be reused.Therefore
Allow on ship V1 and fire ship V2 is monitored using identical predict (if radio link interruption detected immediately) or
The prediction (if being just detected after onepull is performed) being substantially the same.
According to another variant, in series, the number N of included explosion prediction is variable and is fire ship speed
Function.For example, the given maximum length in time for interrupting for radio link, the integrated navigation system INS2 of fire ship V2 are true
The number N of the explosion prediction in fixed each series, it is determined that according to be fire ship speed and continuous demolition point between away from
From.
With reference now to Fig. 5 and Fig. 6, Fig. 5 and Fig. 6, show method according to a second embodiment of the present invention.In Figure 5, supervise
Listen the radio link normal work (i.e., it is possible to use) between ship V1 and fire ship V2.In figure 6, this radio link goes out
Existing failure (i.e. it is impossible to use).It should be noted that Fig. 5 and Fig. 6 schematically illustrate the sequence of operations on time shafts.
Fig. 5Schematically illustrate in normal condition (radio link normal work between monitoring ship V1 and fire ship V2
Make) under and continuous logging mode (assume that seismic recorder SR1 is only to start a continuous record system once, i.e. earthquake record
Device SR1 need not start in every separate explosion) under, the management performed by blast operations and record operation.
The step of being performed by monitoring ship V1 and fire ship V2 is will be described in now.
The operation of fire ship V2 is as described in first embodiment described in reference diagram 3 above (for first circulation, referring to
Prediction series TP, TP' and TP " and message 31,32 and 33).
Second embodiment is to monitor the operation of ship V1 with the difference of first embodiment, because seismic recorder SR1
It is continuous record system.
By the seismic recorder SR1 seismic data recording continuously provided by seismic sensor SS1 is continuous global the
In one file 50.Each geological data or each geological data group and time tag (time in this global first file 50
Stamp) it is associated.These time tags from the clock reference CR2 synchronous with gps clock, the gps clock be monitor ship V1 and
The common time base of fire ship V2.
Additionally, and first embodiment as shown in Figure 3, monitor ship V1 integrated navigation system INS1 calculate record head
The RH files are simultaneously sent to seismic recorder SR1 by RH files (the second file), and the RH files include that what is received before has
Close the data (blasting time FTB, pipette tips GH and hypocentral location SP) of the first explosion.This record head RH is sent in message 36
Seismic recorder SR1.
First embodiment also shown in FIG. 3, in T0 " is (shot1) (possibly positive or negative plus predefined time delay D
) place, enabling signal 35 is sent to acoustic controller AC1 by integrated navigation system INS1.
The seismic recorder SR1 for monitoring ship V1 continuously restores true blasting time from record header file (the second file)
FTB.For each true blasting time, seismic recorder SR1 chooses (select) quick-fried with equal to true from global first file 50
The associated geological data of the time tag of broken time FTB or geological data group.Therefore, seismic recorder SR1 is every separate explosion
Generate specific record (specific first file).
Subsequently, by specific first file is combined with the second file (RH files), seismic recorder SR1 generates (arrow
Operation represented by 57) relevant very complete the 3rd file (SEG-D files) per separate explosion.
In a variant, the first file is combined with the second file not by seismic recorder SR1 performing, but by
Another equipment for monitoring ship V1 (for example, is performed in seismic survey process) performing, or is monitored on ship V1 by not being located at
Equipment (for example, is performed after exploration) performing.
Fig. 6Schematically illustrate non-normal condition (radio link not monitor ship V1 and fire ship V2 between just
Often work) under and aforementioned continuous logging mode under, the management performed by blast operations and record operation.
Example as shown in Figure 4, the time period that radio link breaks down are represented by shadow region 410.
The step of being performed by monitoring ship V1 and fire ship V2 is will be described in now.
The operation of fire ship V2 is as described in first embodiment described in reference diagram 5 above (for first circulation, referring to
Prediction series TP, TP' and TP " and message 31,32 and 33).
Second embodiment is to monitor the operation of ship V1 with the difference of first embodiment, because seismic recorder SR1
It is continuous record system.
When radio link breaks down, the seismic recorder SR1 for monitoring ship V1 can not be received (by message 33)
To the true blasting time FTB from fire ship V2.
As described above, monitoring ship V1 can continuously by the relevant not actuated seismic data recording from fire ship V2
In continuous global first file 50.Each geological data or each geological data group in this global first file 50 with
The time tag (timestamp) provided by clock reference CR2 is associated, and the clock reference CR2 is synchronous with gps clock (described
Gps clock is the common time base for monitoring ship V1 and fire ship V2).
In this stage, the integrated navigation system INS1 for monitoring ship V1 cannot calculate RH files (the second file), because it
Message 33 is not received by, and message 33 includes data (blasting time FTB, pipette tips GH and the focus position about the first explosion
Put SP).
When the integrated navigation system INS1 for monitoring ship V1 receives new prediction series (in the example shown in Fig. 6 it is
TPn) when, it detects the explosion data not yet received about the first explosion itself.Subsequently, integrated navigation system INS1 please
Ask RD1 to be sent to the integrated navigation system INS2 of (arrow 47) fire ship V2, and receive the message RD2 (arrow as response
48), message RD2 includes omission explosion data (blasting time FTB, pipette tips GH and the hypocentral location about the first explosion
SP)。
If radio link break down during have been carried out some separate explosions (rather than only as Fig. 6 example in
As shown in), then the integrated navigation system INS2 of fire ship V2 can send message RD2, and message RD2 is comprising relevant all
The omission explosion data (blasting time FTB, pipette tips GH and hypocentral location SP) of these explosions.
In the example shown in Fig. 6, after message RD2 (arrow 48) is received, the integrated navigation system of ship V1 is monitored
INS1 calculates RH files (the second file) and the RH files is sent to seismic recorder SR1, before the RH files include
The data (blasting time FTB, pipette tips GH and hypocentral location SP) of relevant first explosion for receiving.This record head RH is in message
Seismic recorder SR1 is sent in 46.
Due to having completed many separate explosions during radio link breaks down, thus monitor ship V1 earthquake record (by
The record that seismic recorder SR1 is carried out) time started should not be complete with the blasting time on fire ship V2 (true blasting time)
It is exactly the same.But in the case, with discontinuous logging mode conversely, the data and the second file of the first file need not be made
Data (having definite blasting time) are synchronous.In fact, be directed to each true blasting time, seismic recorder SR1 is from global the
One file 50 chooses (select) geological data or geological data being associated with the time tag equal to true blasting time FTB
Group.Therefore, seismic recorder SR1 is that every separate explosion generates specific record (specific first file).
Subsequently, by specific first file is combined with the second file (RH files), seismic recorder SR1 generates (arrow
Operation represented by 57) relevant very complete the 3rd file (SEG-D files) per separate explosion.
In a variant, the first file is combined with the second file not by seismic recorder SR1 performing, but by
Another equipment for monitoring ship V1 (for example, is performed in seismic survey process) performing, or is monitored on ship V1 by not being located at
Equipment (for example, is performed after exploration) performing.
In the first and second embodiments mentioned above, for perform Fig. 3 and Fig. 4 (first embodiment) and Fig. 5 and
The various functions block of step shown in Fig. 6 (second embodiment) can be similarly obtained good enforcement, and embodiment is：
One group of computer instruction is performed, the instruction is by PC type devices, DSP (digital signal processor) or microcontroller
Perform Deng Reprogrammable computing machine；Otherwise
Implemented by specialized hardware machine or specific components, the component is, for example, FPGA (field programmable gates
Array), ASIC (special IC) or any other hardware module.
If implemented in Reprogrammable computing machine for defining the algorithm of method, then correspondence program (that is, is instructed
Group) dismountable non-momentary computer readable carrier medium (for example, floppy disk, CD-ROM or DVD-ROM) or not can be stored in
In dismountable non-momentary computer readable carrier medium.
As described above (referring to Fig. 3 to Fig. 6), perform explosion when, generally attempt to generate the 3rd file (SEG-D files,
Each SEG-D file is related to explosion, and is obtaining by the first file is combined with the second file (RH files)),
Because management is got up simpler.However, there is certain situation (error, process constraint), in such cases, the 3rd file
Generate can after part proved recipe formula performing and complete (or completely after proved recipe formula performing).For example, for even
For SEGD files are generated (referring to Fig. 5 and Fig. 6) under continuous logging mode, the SEGD for generating per separate explosion in real time can be avoided literary
Part.In other words, all data in " global first file " 50 are preserved, to generate corresponding SEGD literary so as to later proved recipe formula
Part.Advantageously, so it is contemplated that before or after the every section of persistent period (length records) being associated with every separate explosion
Physical phenomenon.Thus promote this process.
Claims (10)
1. a kind of method for managing many ship seismic systems, many ship seismic systems include：First ship, first gear
There is record system and draw at least one towing cable integrated form seismic sensor；And second ship, the second ship include perform
At least one focus of explosion, the geological data obtained by the seismic sensor are recorded by the record system, are remembered
The geological data of record is combined with the explosion data about the explosion, to obtain data splitting, by the number of combinations
According to being interpreted, it is obtained in that seabed represents, wherein the method comprising the steps of：
Multiple explosions prediction series is sent to first ship via radio link by the second ship, and the series connects in time
Continuous to update, each series includes the moment for being designed for ensuing n times explosion, wherein N >=2；
For every separate explosion, the second ship starts at least one focus according to the prediction, and via the nothing
Explosion data is activation about the explosion is given first ship by line current source road；
In order to record geological data, first ship in a non-continuous manner and according to the explosion prediction series for finally receiving come
Start the record system, or start the record system in a continuous manner；
If predicting that series is analyzed by the explosion to receiving, it is relevant that first ship detects that oneself not yet receives
Explosion data of executed explosion at least one times, then first ship sends the requests to the second ship, and connects
It is incorporated as the omission explosion data for response；
For each executed explosion and related explosion data, geological data is selected according to the related explosion data, and
And selected geological data is combined to the related explosion data, to obtain the data splitting.
2. method according to claim 1, wherein the explosion data of the executed explosion about giving include：
The actual time of the given executed explosion；
The position of at least one focus of the executed explosion given described in executed；And
It is related and quick-fried for performing the given executed at least one rifle included at least one focus
Broken data.
3. method according to claim 1, wherein for each executed explosion, first ship is from finally receiving
The moment for being designed for the executed explosion is obtained in explosion prediction series, and at the moment function at the plan moment
Start included at least one equipment in first ship.
4. method according to claim 1, wherein the number N of explosion prediction included in the series is variable,
And it is the function of the speed of the second ship.
5. method according to claim 1, wherein first ship perform it is described according to the related explosion data selecting
The step of selecting geological data, and the selected geological data is combined to obtain described group to the related explosion data
Close the step of data.
6. method according to claim 1, wherein the record system is discontinuous record system,
Each executed explosion is directed to wherein, first ship is planned from the explosion prediction series for finally receiving
For the moment of the executed explosion, and start the discontinuous record system at the plan moment,
And wherein be directed to each executed explosion, it is described according to the related explosion data to select geological data the step of wrap
Include：According to the actual time of the included executed explosion in the explosion data, select by the discontinuous record system
The geological data united from the plan moment start recording.
7. method according to claim 6, wherein for each executed explosion, selecting the step bag of geological data
Include following steps：
It is determined that the time shift between following item：The second ship performs the actual time of the executed explosion, and described
The moment for being designed for the executed explosion that first ship is obtained from the explosion prediction series for finally receiving；
According to the actual time and the time shift of the executed explosion, by the discontinuous record system from described
Geological data is selected in the geological data of plan moment start recording.
8. method according to claim 6, if wherein the second ship detect that the radio link is cannot
Use, then the second ship can stop the explosion prediction series for generating new renewal, and pre- according to the explosion for ultimately producing
Survey series and perform ensuing explosion, till the radio link can be reused.
9. method according to claim 1, wherein the record system be using common clock come make time stamp data with
The associated continuous record system of the recorded geological data,
Wherein described second ship determines included each executed explosion in the explosion data using the common clock
Actual time,
And wherein be directed to each executed explosion, it is described according to the related explosion data to select geological data the step of wrap
Include：The time being associated according to the actual time of the executed explosion and with the recorded geological data
Stamp data, select geological data in the geological data for being recorded.
10. a kind of many ship seismic systems, which includes：First ship, first ship have record system and draw at least one
Towing cable integrated form seismic sensor；And second ship, the second ship include perform explosion at least one focus, the earthquake
The geological data obtained by sensor is recorded by the record system, the geological data for being recorded and the relevant explosion
Explosion data combine, and to obtain data splitting, by being interpreted to the data splitting, are obtained in that seabed represents,
Wherein：
The second ship is suitable for being sent to first ship, the series by multiple explosions prediction series via radio link
Continuous in time to update, each series includes the moment for being designed for ensuing n times explosion, wherein N >=2；
The second ship is suitable for every separate explosion according to the prediction to start at least one focus, and via institute
Radio link is stated by the explosion data is activation about the explosion to first ship；
First ship is applied in a non-continuous manner and predicts series to start the note according to the explosion for finally receiving
Recording system, or start the record system in a continuous manner, so as to record geological data；
Suitable for predicting that series is analyzed by the explosion to receiving, first ship detects that oneself has not yet received
Close the explosion data of executed explosion at least one times；
If first ship detects the explosion data oneself not yet received about executed explosion at least one times, that
First ship is suitable for sending the requests to the second ship, and receives the omission explosion data as response；
The system is suitable for each executed explosion and related explosion data, is selected according to the related explosion data
Geological data is selected, and selected geological data is combined to the related explosion data, to obtain the data splitting.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12305482.7A EP2657725B1 (en) | 2012-04-27 | 2012-04-27 | Method and system for managing a multi-vessel seismic system |
| EP12305482.7 | 2012-04-27 | ||
| EP123054827 | 2012-04-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103376467A CN103376467A (en) | 2013-10-30 |
| CN103376467B true CN103376467B (en) | 2017-04-12 |
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| CN201310153628.0A Active CN103376467B (en) | 2012-04-27 | 2013-04-27 | Method and system for managing a multi-vessel seismic system |
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|---|---|
| US (1) | US9164189B2 (en) |
| EP (1) | EP2657725B1 (en) |
| CN (1) | CN103376467B (en) |
| BR (1) | BR102013009974A2 (en) |
| CA (1) | CA2810810C (en) |
| MX (1) | MX2013004779A (en) |
| RU (1) | RU2013114742A (en) |
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| EP2887100B1 (en) | 2013-12-20 | 2022-10-26 | Sercel | Method for downloading data to a central unit in a seismic data acquisition system |
| EP2902810A1 (en) * | 2014-02-04 | 2015-08-05 | Sercel | Method for obtaining an adapted sequence of shot predictions from a raw sequence of shot predictions |
| US20170276774A1 (en) * | 2014-10-07 | 2017-09-28 | Cgg Services Sas | Method and device for boosting low-frequencies for a marine seismic survey |
| US9810802B2 (en) * | 2015-04-08 | 2017-11-07 | Sercel | Method for managing the target location of a vessel |
| US20160297508A1 (en) * | 2015-04-08 | 2016-10-13 | Sercel | Method for managing the speed of a vessel |
| US10877177B2 (en) * | 2017-12-18 | 2020-12-29 | Pgs Geophysical As | Obtaining long-period magnetotelluric marine survey data using a towed streamer system |
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Also Published As
| Publication number | Publication date |
|---|---|
| BR102013009974A2 (en) | 2015-06-16 |
| US9164189B2 (en) | 2015-10-20 |
| CN103376467A (en) | 2013-10-30 |
| RU2013114742A (en) | 2014-10-10 |
| EP2657725B1 (en) | 2015-01-14 |
| US20130286776A1 (en) | 2013-10-31 |
| CA2810810A1 (en) | 2013-10-27 |
| MX2013004779A (en) | 2013-10-28 |
| EP2657725A1 (en) | 2013-10-30 |
| CA2810810C (en) | 2018-10-16 |
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